mineral
Sugilite
KNa2(Fe,Mn,Al)2Li3Si12O30
AI-generated identification · may be incorrectHardness: 5.5-6.5 on the Mohs scale, Color: Pinkish-purple, violet, magenta, yellowish-brown, Luster: Vitreous to waxy, Crystal Structure: Hexagonal, Cleavage: None, Specific Gravity: 2.74-2.80
- Hardness
- 5
Identified More mineral →
Explore Sugilite in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness: 5.5-6.5 on the Mohs scale, Color: Pinkish-purple, violet, magenta, yellowish-brown, Luster: Vitreous to waxy, Crystal Structure: Hexagonal, Cleavage: None, Specific Gravity: 2.74-2.80
Formation & geological history
Formed in manganese-rich metamorphic environments and alkaline igneous intrusions, often associated with rich orebodies. Ages vary depending on the specific geological deposit.
Uses & applications
Used primarily as an ornamental gemstone for jewelry, cabochons, carvings, and highly sought after by mineral collectors.
Geological facts
First discovered in 1944 by Japanese petrologist Ken-ichi Sugi, sugilite is celebrated for its rich royal purple color, which is often attributed to trace amounts of manganese.
Field identification & locations
Can be identified in the field by its distinctive vibrant purple to magenta coloration interwoven with dark matrix or lighter silicate bands. Major deposits include South Africa and Japan.
